hanson



E. C. HANSON.

LIFEBOAT RADIOSIGNALING SYSTEM.

APPLICATION FILED FEB. 20' I919.

Patented Nov. 4, 1919.

lllllllll-lalll al Ill-Illullllllllllnlllllll'lll lllllllll'lllI-Il 50floating antenna will be more fully 11 UNITED s ns on roE.

EARL C. HANSGN, OF WASHINGTGN, DISTRICT OF COLUMBIA.

' LIFEBOAT RADIOSIGNALING SYSTEM.

- Specification of Letters Eatent.

Application filed February 20, 1919. Serial bio. 278,179.

To all wit 0m it may concern:

Bait-known thatxI",--E4 nn 0. Hanson, av

..My.y gmv h v e 3, broadly to radio niinunication systems, and moreparticurl syst em fo signaling to and from as; v The object of thisinvention is to provide radio telephone or telegraph system "adapted forinstallation on lifeboats for use in emergency signaling.

A further object of this invention is to utilizea suitable floatingantenna to be retained on a suitable insulated reeland con- 2n nected"to-radio signaling apparatus to be describedhereinafter. I A stillfurther object of the invention is to provide a, helmet to be worn bythe I operatonf'which contains a telephone receiver and telephonetransmitter, the purpose, of the helmet being to eliminate extraneoussoundsfwhenop'erating the signaling s stem. p a

Other and further objects of the invention will in part be obvious andwill in part be poirited out in the following specification and setforthinthe appended claim. Figure 1 of the drawings representsdiagrammatically the radio transmitting and receiving signalingapparatus installed on a life boat in vcombination with a floatingantenna and operators helmet, together with means for manuallycontrolling-the signaling apparatus, as a telegraph trans- 40 mitter; j

Fig. 2 is a cross-sectional View of the floatin antenna. -jj;

Tteferring to Fig. .1, reference character 1 shows a section 'ofalifeboat equipped with lie 48 radio telephone and telegraph apparatus indicated at 2.- 3- shows an antenna reel mounted on an insulated support5. 4 indicates afloating' antenna adapted to be wound on the drum of thereel 3. This 1 described hereinafter as set forth in Fig. 2. tenna a isconnected to the radio signaling apparatus through insulated conductor6.

The an- Ground plate 11 is connected through lead 11 to theaforementioned slgnaling appara- Patented Nov. 4, 1919.

tus. 7 is a Waterproof helmet similar to the type of head gear used inaircraft radio systems. The helmet contains a telephone receiver "8connected with the signaling apparatus by conductors within 'waterprooradio telephone transmitting apparatus in case 2 by conductors inwaterproof casing 9. The radio signaling apparatus contained in case 2can be controlled as a radio telephone transmitter by employingtransmitter casing 8 9 is a telephone transmitter secured in helmet 7and connected with the surrounded by a suitable insulating sheathing 43,around which is placed buoyant material 4 ascork, for example. Thisbuoyant material is retained by an outer protecting waterproof casing 4.I

The material employed in the construction of the floating antennais ofsuch a character that the cable will be sufficiently flexible to bereadily wound on the retaining reel.

scribed, reliable telephonic and telegraphic radio communication can bemaintained to and from lifeboats and used in cases of emergency. It ispossible, by changing the efi'ective length of the floating antenna bywinding out or recoiling, to control the wave length of the radio,"signaling system.

What I claim is I In a radio signaling system for lifeboats, thecombination of radio signaling apparatus, means for controlling saidradio signaling apparatus by speech or signal means, and a buoyantantenna connected to one side of said radio apparatus, adapted to becoiled on a reel when in inoperative position, boat, and an earth saidradio signaling apparatus.

EARL o. HANSON.

said reel being insulated from the life-v plate connected to'th'e

